Truck side frame



Mach 21, 1933 H. c. DRElBUss Er AL 1,902,805

TRUCK SIDE FRAME Filed Nov. 12, 1929 2 sheets-sheet 1 March 2l, 19,33. C, DRElBUss ET AL 1,902,805

TRUCK SIDE FRAME Filed Nov. 12', 1929' zsheets-shee. 2

IIA

35 taken in connection with the Patented Mar. 21, 1933 i i UNITED! dSTATES PATENToFF1cEjt HARRY c. DREIDnss A ND GEORGES. CHILDS, or sT. LoUIsVMIssoURI, AssIGNoR To soULLIN STEEL COMPANY, or sT. LOUIS, MIssoURLA CORPORATION `oF DELAWARE TRUCK SIDE FRAME l Application'iled November 12, 1929. Serial No. 406,678.

. This. invention relates to improvements in `side frames, more particularly to improvements inthe strengthening means employed for the spring seat section to4 provide for uniform deflection ofthe tension 'and compression, members. v It haslbeen found in making side frames, .especially of the wider .types for high ca'-v fpacity cars, .that itis necessary to make the frame very wide and some means must be employed in order to provide for uniform de'- `lection ofthe tension and compression members of the spring vseat vsection and therefore for uniform strength distribution. Accord- `ing to previous practice, additional ribs or webs have been employed within the box sectionof the spring seat member, but certain objections have been raised `to such aconstruction, sinceitis not good foundry practice to have intersecting walls. e.

' It'is an object of the present improvements to provide tubular strengthening means for the spring seat section, wherebythere can be a uniform flow of metal at the intersecting i vpoints of ythe tubular strengthening means '30 sides of the *center line ofthe side frame between the walls of the spring seatsection. Y

Additional objects and advantagesof the present improvements `.will 4be .more readily apparent from the following description,

attached ydrawings, in which:

Figure '1 is an elevation of the portion-of a Vside frame illustratingk a single tubular strengthening member extending between the i 140 webs of the `spring seat sectiont; I

FigureQ'is a partial `.bottom plan view of the side frame illustrated in Figure 1;

Figure 3 is a transverse section taken along the center line kof the side frame illustrated inF'igure1; 4 .l if l p Figure 4 is a partialelevationfofa portion 4of a spring seat section of a side frame illustrating a pair of tubular strengthening mem-l bers disposed between the upper` and lower websof the spring seatsection;

`through the center of x5 is aV partial` .bottom view ofthe spring seat section illustrated inFigure L1; y

' f Figure isa transverse section taken along `the centerline of .Figure 1;

YFigure 7 isa partial sideelevation of'a fur- -ther modification of a side framefembodying theimprovements of the present invention in which the diameterof the tubular strengthening members increases towards theupper web .of the sprm seat section; I

Figure 8 V1s a partial bottom vplan view of the side frame illustratedin Figure 7;

Y Figure 9 is a broken transverse vsection taken'in part on the'center line of theside frame i illustrated in Figure 7 and in Vpart member; J Figure-Misa partial detail section :taken on the plane indicated `by linelO--lO'n vFigure8" -"F'giure"11`is a partialillustration of ra sprin seat section illustratingV al Vfurther modi cation 1 Figure 12 is a bottom pIanview ofthe the tubular connecting y spring seat section" illustrated lin'ligure 11;

Figure 1 3 isa transverse section taken along thesection/line '1B-13 of the spring .Y 4seat section as indicated in Figure 11.

In accordance with the usualfpractice,fthe side frame Villustrated in` Figure 1 includes an upper compression-member 10 anda lower Vtension member 11v integrally' connected `at their' converging ends tojournalfboxes `13. The tenslon and compression membe'rsxare spaced at vtheir center portionsv in parallel disposition and braced by columns or'struts `1.4 to define a window 15 adapted to receive a customarybolster.. The tension and compression members as shown are of channel section. Thus the compression member has an upper web 16, depending flanges 17 and a beaded edge18, while the .tension member has a lower web 19 and upwardly extending flanges 20 terminating ina beaded edge 21.

The 'columnsv 14 also are of channel section and include an inner `web -22`and` anges 23 terminatingzin a beaded edge`24. The tension andwcom'pression members and the columns loo,

are so joined together that their ianges merge with each otherand the beaded edges form a continuous strengthening rib around openings 25. n

The portion ofthe tension member at the bottom of the window 15 forms a spring seat s section 26 and this section is of box shaped formation comprising a lower tension web between the upper and lower webs 27 Vand 28 of the spring yseat section. Straight ribs or webs have been utilized, but have proved unsatisfactory. According to our improvements,-we employ atubular member 33, which inthe present-instance is disposed at the center line 'of the Sidegframe and extends vertically between the lower and upper webs 27 and 28 of thespring seat section. The tube' 33 servestoY tie together the webs of the spring Vseat section and provide for uniform deflection.--It is apparentthat this construction avoids intersecting walls and the'metal 1s 'free toiiow at the intersections of the tube with the webs.v

Accordingto the modication disclosed in Figures 4, 5, and 6 in which similar reference numbers have been employed as lfar as possible, we have shown a pair of tubular strengthening members,- 34, and v 35l vThe tubes in this modification areeach of elongatedl shape in thedirection ofthe plane of the side frame.V In Figures 4 and 5 the bosses 36 lfor the spring seat section are also illustrated. i

As a further modificationy there is illustrated in Figures7 to 1() a modied form of side 4frame in whichthe tubular strengthening portions widen towards their upper ends. Thus the tubes '37 and 38 disposed onv opposite-sidesfof the centerline and between the upper and lower webs of thespring seat section are'substantially conical in form. Thus Y the openings 39 and 40 through the lower webf27 are smaller than theopenings 47 through thel upper web 28. This construction is possiblebecause'additional metal canY be removed from the upper web without sacri- `licing strength. To compensate for the'openings through the 'webs we may make the lower web 27 somewhat wider than customary and portions of the walls as illustrated at41 incline outwardly toward the Lipper web 28.

, A further l. modified manner of utilizing tubular strengthening Vfor vthe spring seat porti-on of a sideframe is illustrated in Figures 11 to 13 in which similar reference characters are employed as far as possible as in the previous figures. According to thisembodimentthe drainV openings 29 in the web 19 of the tension member are extended intov the web 27 of the spring seat portion between thel walls42 vand 43. .The Vwalls 42 and 43 extend `between the upper and lower webs as shown byl the dotted line 44 in Figure 11 and finally merge into the top web 28. rIhe lwalls 42 and 43 further merge intoeachother at the curved and inclined'portion 45?' Finally to provide strengthening means between the walls 42 and 43, a strengthenir'ig tube 46 isprovided as shown in section 1n Figure 13, extending between the walls 42 and 43.V This construction also'doesfaway with intersecting wallsand tends to hold the lower web 27 properlrelationfto 'the load s Y' conditions.'

It will be obvious thatmany other modified constructions may be employed `forsubstantiallythe same purposes as the present invention, and it will be understood that we intend to cover 'all such modications as come within ythe spirit of the appended claims. I 1

vVe claim V:

f1. In a sideframe,a boxt-shapedrspring seat section'and tubular strengthening means between the'webs ofthe spring seat section.

2.l In a side frame, `a spring seat section box-shaped` vin formation' and vtubular strengthening means tying together the upper and lower webs of the spring seat section.

3. In -sidej frame, a :box-shaped "spring v seat section and a pair of tubular strengthening porti'ons" disposed on opposite sidesl of the center line of the lsidef-frame between theY upper and lower webs of the'springseat section. f v 4. In ar'side frame construction, a `spring seat section box-shaped -in formation and tubular means-tyingtogether the upper andlower webs of the spring seat section vwithout theprovision of intersecting .walls 5. In a side frame construction, a spring' seat portion, boX-shapedgin formation, including a pair ofl'walls lforming continuations' of the upper and lower lwebs .and a tubular portion between saidY walls.

. c. In a Side frame, a.- b'oX-Shaped' Spriig seat vsection vand an integral substantially tubular reinforcement between the upper' and lower webs of the spring seat section.-

' 7. In a sideframe, a box-shaped spring seat section, the upper' and lower webs of said Aspring seat section .having openings therein, re-entrant portions extending inward and deining the edges of the openings,said re-entrant' portions mergingtogether within the box-shaped section. f v

8. In aside frame including a portion substantially box-shaped in section adaptedv to j receive a transverse load,'an integraltubular reinforcement v extending between opposed A walls of said box-,shaped portion andparallel to the direction of said load, said Walls having openings at the ends of said reinforcement each having an area at least equal to the minimum cross-sectional area of the opening in saidereinforcement.

9. In a side frame including a portion substantially box-shaped in section, arranged horizontally and adapted to receive a vertical load, an integral tubular reinforcement eX- tending between the upper and lower Walls of said box-shaped portion, said Walls having openings at the ends of said reinforcement each having an area at least equal to the minin Y mum cross-sectional area of the opening in said reinforcement. Y

Signed at St. Louis, Missouri this 8th day of November, 1929. e

' HARRY,v C. DREIBUSS;V GEORGE S. CHILES. 

